I am planning a migration of our current private instance to AWS using the pre-built AMIs and am having a problem finding out exactly what cost per hour the ami-fcfd6194 server would be. Is this image based on the cheaper Amazon Linux (Ubuntu version) that is currently shown to cost $.108 per hour for an m4.large for on-demand pricing? I've reached out to an Amazon Solution Architect, and he was not even sure of the specifics of that particular AMI. Would anyone happen to know exactly which costs structure would be used for the following?

The server image is Ubuntu-based but from 2014. AFAIK there are only 2 tiers for pricing - Windows or Linux and this would definitely be the cheaper Linux pricing but if you have different tiers beyond that I can't really help.

In case it wasn't obvious, the server doesn't actually run any tests and it will still need to start/stop agents and the agents will get billed at the windows rate (the server doesn't know anything about the new Linux agents yet).

Regarding the other comments, yep we will have a bunch of the Windows agents driven via API (probably have to have some dummy tests to keep them up all the time) but we actually will be able to expand by almost double and keep the costs lower than our Azure setup (and have things more consistent as our machines were all over the place)

Thanks for the quick replies, and for the info on the Server AMI/New Agent incompatibility. The concept behind those is to spin up one cheap Linux machine and run docker containers within that, effectively boosting the throughput of pages per hour per Linux VM? If so, sounds like a great stride forward. A little hesitant to entrust things to Docker right now (mainly my lack of Docker prowess), but yeah maybe next year